BERKELEY — A 24-year-old UC Berkeley student found dead of a gunshot wound to the head in his fraternity room last week may have died accidentally, not suicide as police previously said.

Alex Lowenstein of Mill Valley was found unresponsive in his room by a fellow fraternity member about 3 a.m. Sept. 24 at Delta Upsilon on Warring Street, Berkeley police said.

Paramedics pronounced the him dead at the scene, and Berkeley police initially concluded Lowenstein had committed suicide.

Since there were no witnesses, evidence found at the scene, an autopsy, and interviews with family and friends will help coroner’s officials make their determination as to how the young man died, authorities said.

“There is a possibility that the death was accidental,” said a Berkeley police statement released Thursday night. “Berkeley police must wait for the coroner’s report to determine the actual method of death.”

Police would not say why they may be changing the student’s cause of death.